import itertools

n,k = map(int,input().split())
a = list(map(int,input().split()))

nl = [i for i in range(n)]

ans = 0

for comb in list(itertools.combinations(nl,k)):
    s = 0
    for i in list(comb):
        s += a[i]
        
    s998 = s % 998
    s9982 = s % 998244353
    if s9982 <= s998:
        ans += 1
        
print(ans % 998)